package D0216;

public class Dome3 {

    public void fun1() {
    }

    public void fun2() {
    }

    public void fun3() {
    }
}
//abstract class X{
//    public abstract void fun1();
//    public abstract void fun2();
//    public abstract void fun3();
//}
interface X{
    public void fun1();
    public void fun2();
    public void fun3();
}
